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# Martha bought several pencils. If each pencil was either a

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Manager
Joined: 01 Nov 2007
Posts: 103

Kudos [?]: 78 [0], given: 0

Martha bought several pencils. If each pencil was either a [#permalink]

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15 Mar 2008, 05:45
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Martha bought several pencils. If each pencil was either a 23-cent or a 21-cent pencil, how many 23-cent pencils did Martha buy?

(1) Martha bought a total of 6 pencils
(2) The total value of all pencils Martha bought was 130 cents.

Kudos [?]: 78 [0], given: 0

Manager
Joined: 02 Mar 2008
Posts: 205

Kudos [?]: 53 [0], given: 1

Concentration: Finance, Strategy

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15 Mar 2008, 06:30
(1) p1 + p2 =6
(2) p1*23+p2*21=130

1 is not enough
2 -> do trial and error since p1<5, u try and get p1=2, p2=4

Kudos [?]: 53 [0], given: 1

Re: DS (word problem)   [#permalink] 15 Mar 2008, 06:30
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